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Add Image to Favorite List 2012-09-18 1439x1080x3
Researchers are brewing up icy, organic concoctions in the lab to mimic materials at the edge of our solar system and beyond. The lab is shown at right, and a very young solar system, with its swirling planet-forming disk is at left.
PIA15805:
Ice from the Solar System's Edge (Artist's Concept)
Full Resolution:     TIFF (4.664 MB)     JPEG (176.6 kB)
Add Image to Favorite List 2012-10-03 Galaxy Evolution Explorer (GALEX)
Spitzer Space Telescope
 IRAC
Ultraviolet/Visible Camera
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This image from NASA's Spitzer and GALEX shows the Helix nebula, a dying star throwing a cosmic tantrum. In death, the star's dusty outer layers are unraveling into space, glowing from the intense UV radiation being pumped out by the hot stellar core.
PIA15817:
The Helix Nebula: Unraveling at the Seams
Full Resolution:     TIFF (108.7 MB)     JPEG (3.087 MB)
Add Image to Favorite List 2012-10-23 NuSTAR
 NuSTAR
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These images, taken by NASA's black-hole hunter, NuSTAR, are the first, focused high-energy X-ray views of the area surrounding the supermassive black hole, called Sagittarius A*, at the center of our galaxy.
PIA16213:
First Look at Milky Way's Monster in High-Energy X-ray Light
Full Resolution:     TIFF (23.08 MB)     JPEG (206.4 kB)
Add Image to Favorite List 2012-11-02 Mars Science Laboratory (MSL)
 SAM
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If the atmosphere of Mars contains methane, various possibilities have been proposed for where the methane could come from and how it could disappear.
PIA16461:
Potential Sources and Sinks of Methane on Mars
Full Resolution:     TIFF (1.321 MB)     JPEG (60.6 kB)
Add Image to Favorite List 2012-11-26 Asteroid Goldstone Deep Space Network (DSN)
 Goldstone Solar System Radar
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Images of asteroid 2007 PA8 have been generated with data collected by NASA's Goldstone Solar System Radar. The images of 2007 PA8 reveal possible craters, boulders, an irregular, asymmetric shape, and very slow rotation.
PIA16474:
Nine Radar Images of Asteroid PA8
Full Resolution:     TIFF (2.647 MB)     JPEG (271.5 kB)
Add Image to Favorite List 2012-11-28 Herschel Space Observatory
 Herschel Telescope
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This artist's impression shows the orbits of planets and comets around the star 61 Vir, superimposed on a view from the Herschel Space Telescope.
PIA16467:
A Vast Disk of Comets (Artist's Concept)
Full Resolution:     TIFF (2.098 MB)     JPEG (45.26 kB)
Add Image to Favorite List 2012-11-29 Mercury MESSENGER
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Model of Polar Ice Deposit Formation
PIA16519:
Model of Polar Ice Deposit Formation
Full Resolution:     TIFF (32.47 MB)     JPEG (329.5 kB)
Add Image to Favorite List 2012-12-14 Asteroid Goldstone Deep Space Network (DSN)
 Goldstone Solar System Radar
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This image of asteroid Toutatis was generated with data collected using NASA's Deep Space Network antenna at Goldstone, Calif., on Dec. 12 and 13, 2012 and indicates that it is an elongated, irregularly shaped object with ridges and perhaps craters.
PIA16599:
Tumbling Asteroid Toutatis Animation Icon
Full Resolution:     TIFF (621.1 kB)     JPEG (124.8 kB)
Add Image to Favorite List 2013-01-08 Herschel Space Observatory
Spitzer Space Telescope
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In this diagram, the Vega system, which was already known to have a cooler outer belt of comets (orange), is compared to our solar system with its asteroid and Kuiper belts. The ring of warm, rocky debris was detected using NASA's Spitzer Space Telescope,
PIA16611:
Vega: Two Belts and the Possibility of Planets
Full Resolution:     TIFF (30.74 MB)     JPEG (304.7 kB)
Add Image to Favorite List 2013-02-05 ISON Deep Impact
 Medium Resolution Instrument (MRI)
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This frame from an animation series of images of comet C/2012 S1 (ISON) was taken by the Medium-Resolution Imager of NASA's Deep Impact spacecraft over a 36-hour period on Jan. 17 and 18, 2013.
PIA16748:
NASA'S Deep Impact Spacecraft Images Comet ISON Animation Icon
Full Resolution:     TIFF (566.7 kB)     JPEG (54.79 kB)
Add Image to Favorite List 2013-03-18 Asteroid Goldstone Deep Space Network (DSN)
 Goldstone Solar System Radar
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This sequence of radar images of asteroid 2013 ET was obtained on Mar. 10, 2013, by NASA scientists using the 230-foot (70-meter) DSN antenna at Goldstone, CA, when the asteroid was about 693,000 mi (1.1 million km) from Earth.
PIA16895:
Goldstone Radar Images of Asteroid 2013 ET
Full Resolution:     TIFF (322.3 kB)     JPEG (65.17 kB)
Add Image to Favorite List 2013-04-23 Jupiter Herschel Space Observatory
 PACS
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This map shows the distribution of water in the stratosphere of Jupiter as measured with the Herschel space observatory. White and cyan indicate highest concentration of water, and blue indicates lesser amounts.
PIA17006:
Distribution of Water in Jupiter's Stratosphere
Full Resolution:     TIFF (9.09 MB)     JPEG (143.3 kB)
Add Image to Favorite List 2013-04-23 Jupiter Hubble Space Telescope
 Hubble Space Telescope
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This is a composite photo, assembled from separate images of Jupiter and comet Shoemaker-Levy 9, as imaged by the NASA/ESA Hubble Space Telescope in 1994.
PIA17007:
Comet Shoemaker-Levy 9 Approaching Jupiter in 1994
Full Resolution:     TIFF (9.441 MB)     JPEG (79.26 kB)
Add Image to Favorite List 2013-05-06 Spitzer Space Telescope
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In this image, an artistic version of a hot Jupiter inspired by computer simulations has been inserted into a photo showing a Spitzer researcher, Heather Knutson, in a laboratory.
PIA17008:
An Astronomer's Fantasy: Planets in the Lab
Full Resolution:     TIFF (32.01 MB)     JPEG (1.025 MB)
Add Image to Favorite List 2013-05-15 Mars Mars Reconnaissance Orbiter (MRO)
 CTX
HiRISE
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This set of images from cameras on NASA's Mars Reconnaissance Orbiter documents the appearance of a new cluster of impact craters on Mars. The orbiter has imaged at least 248 fresh craters, or crater clusters, on Mars.
PIA16928:
Fresh Cluster of Impact Craters on Mars
Full Resolution:     TIFF (6.852 MB)     JPEG (311.5 kB)
Add Image to Favorite List 2013-06-28 Galaxy Evolution Explorer (GALEX)
 GALEX Telescope
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This image from NASA's Galaxy Evolution Explorer shows NGC 4565, one of the nearest and brightest galaxies not included in the famous list by 18th-century comet hunter Charles Messier.
PIA17246:
Galaxy's Pencil-Thin Profile
Full Resolution:     TIFF (6.753 MB)     JPEG (377.7 kB)
Add Image to Favorite List 2013-07-02 ISON Hubble Space Telescope
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Superficially resembling a skyrocket, Comet ISON is hurtling toward the Sun at a whopping 48,000 miles per hour in this still from a Hubble animation.
PIA17483:
Comet ISON Brings Holiday Fireworks Animation Icon
Full Resolution:     TIFF (945.2 kB)     JPEG (115.3 kB)
Add Image to Favorite List 2013-07-23 ISON Spitzer Space Telescope
 IRAC
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These images from NASA's Spitzer Space Telescope of C/2012 S1 (Comet ISON) were taken on June 13, when ISON was 310 million miles (about 500 million kilometers) from the sun.
PIA17251:
Spitzer Eyes Comet ISON
Full Resolution:     TIFF (2.862 MB)     JPEG (60.64 kB)
Add Image to Favorite List 2013-08-21 Mercury MESSENGER
 MDIS - Wide Angle
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Oblique Impacts in Color
PIA17415:
Oblique Impacts in Color
Full Resolution:     TIFF (5.878 MB)     JPEG (271.1 kB)
Add Image to Favorite List 2013-08-21 Wide-field Infrared Survey Explorer (WISE)
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This artist's concept shows the NASA's WISE spacecraft, in its orbit around Earth. In September of 2013, engineers will attempt to bring the mission out of hibernation to hunt for more asteroids and comets in a project called NEOWISE.
PIA17254:
NEOWISE: Back to Hunt More Asteroids (Artist Concept)
Full Resolution:     TIFF (48.03 MB)     JPEG (1.66 MB)
Add Image to Favorite List 2013-09-10 Comet Spitzer Space Telescope
 IRAC
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With the help of NASA's Spitzer Space Telescope, astronomers have discovered that what was thought to be a large asteroid called Don Quixote is in fact a comet.
PIA17443:
Spitzer Spies a Comet Coma and Tail
Full Resolution:     TIFF (17.29 MB)     JPEG (189.8 kB)
Add Image to Favorite List 2013-09-12 Sol (our sun) Voyager
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Voyager 1 has entered interstellar space. NASA's spacecraft, which rose from Earth on a September morning 36 years ago, has traveled farther than anyone, or anything, in history.
PIA17046:
Voyager Goes Interstellar (Artist Concept)
Full Resolution:     TIFF (49.32 MB)     JPEG (3.534 MB)
Add Image to Favorite List 2013-10-09 Comet Hubble Space Telescope
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This image from NASA's Hubble Space Telescope of the sunward plunging comet ISON suggests that the comet is intact despite some predictions that the fragile icy nucleus might disintegrate as the sun warms it.
PIA18153:
NASA's Hubble Sees Comet ISON Intact
Full Resolution:     TIFF (2.638 MB)     JPEG (82.6 kB)
Add Image to Favorite List 2013-10-25 Kepler
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This artist's concept illustrates the fate of two different planets: the one on the left is similar to Earth, made up largely of silicate-based rocks with oceans coating its surface.
PIA17550:
A Tale of Two Worlds: Silicate Versus Carbon Planets (Artist Concept)
Full Resolution:     TIFF (48.02 MB)     JPEG (793.5 kB)
Add Image to Favorite List 2013-10-30 Mars Mars Reconnaissance Orbiter (MRO)
 HiRISE
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This non-circular pit seen in this image from NASA's Mars Reconnaissance Orbiter is due to a low angle impact from an asteroid or comet. The raised plateau west of the crater was where most of the impact debris landed.
PIA17626:
Martian Thunderbird
Full Resolution:     TIFF (5.191 MB)     JPEG (1.13 MB)
Add Image to Favorite List 2013-11-06 Mars Mars Reconnaissance Orbiter (MRO)
 HiRISE
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Many types of craters exist on Mars. Most are generated by impacts of asteroids and comets. However, in this image captured by NASA's Mars Reconnaissance Orbiter, the craters may be due to steam explosions.
PIA17673:
Cratered Cones in Tartarus Montes
Full Resolution:     TIFF (15.56 MB)     JPEG (783.3 kB)
Add Image to Favorite List 2013-11-14 Comet MESSENGER
 MDIS - Wide Angle
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As comets C/2012 S1 (ISON) and the well-known short-period comet 2P/Encke both approached their closest distances to the Sun in November, 2013, they also passed close to the MESSENGER spacecraft orbiting the innermost planet Mercury.
PIA17693:
MESSENGER's First Images of Comets Encke and ISON
Full Resolution:     TIFF (7.938 MB)     JPEG (265.2 kB)
Add Image to Favorite List 2013-11-25 Comet MESSENGER
 MDIS - Wide Angle
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An optical color image of galaxies is seen here overlaid with X-ray data (magenta) from NASA's Nuclear Spectroscopic Telescope Array (NuSTAR). Both magenta blobs show X-rays from massive black holes buried at the hearts of galaxies.
PIA17740:
A Tale of Two Comets: ISON
Full Resolution:     TIFF (297.7 kB)     JPEG (35.33 kB)
Add Image to Favorite List 2013-11-25 Comet MESSENGER
 MDIS - Wide Angle
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How did scientists know that NASA's Voyager spacecraft entered interstellar space? Increase in the density of charged particles was the key piece of evidence. Our sun sits in a bubble, called the heliosphere, carved out by wind emitted from the hot sun.
PIA17741:
A Tale of Two Comets: Encke
Full Resolution:     TIFF (297.7 kB)     JPEG (49.12 kB)
Add Image to Favorite List 2013-12-11 Europa Galileo
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This artist's concept shows a possible explosion resulting from a high-speed collision between a space rock and Jupiter's moon Europa.
PIA17657:
Hit Hard: Possible Collision at Europa (Artist's Concept)
Full Resolution:     TIFF (15.19 MB)     JPEG (338.3 kB)
Add Image to Favorite List 2013-12-11 Europa Galileo
 Near Infra-Red Mapping Spectrometer
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This image, using data from NASA's Galileo mission, shows the first detection of clay-like minerals on the surface of Jupiter's moon Europa.
PIA17658:
Clay Prints on Europa
Full Resolution:     TIFF (3.844 MB)     JPEG (97.92 kB)
Add Image to Favorite List 2013-12-19 Asteroid NEOWISE
 NEOWISE Telescope
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NASA's NEOWISE spacecraft opened its 'eyes' after more than two years of slumber to see the starry sky with the same clarity achieved during its prime mission. This image shows a patch of sky in the constellation Pisces.
PIA17811:
NEOWISE's Next Light
Full Resolution:     TIFF (29.85 MB)     JPEG (990.1 kB)
Add Image to Favorite List 2014-01-07 Asteroid NEOWISE
 NEOWISE Telescope
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The six red dots in this composite picture indicate the location of the first new near-Earth asteroid, called 2013 YP139, as seen by NASA's NEOWISE.
PIA17829:
NEOWISE's New Find
Full Resolution:     TIFF (20.35 MB)     JPEG (1.182 MB)
Add Image to Favorite List 2014-01-24 Comet Rosetta
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Three of NASA's contributions to the ESA's Rosetta mission are pictured here: an ultraviolet spectrometer called Alice (top), the Ion and Electron Sensor (IES) (bottom left), and the Microwave Instrument for Rosetta Orbiter (MIRO) (bottom right).
PIA17664:
U.S. Instruments Aboard Rosetta
Full Resolution:     TIFF (6.997 MB)     JPEG (193.1 kB)
Add Image to Favorite List 2014-01-24 Comet Rosetta
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Artist's impression of the Rosetta orbiter at comet 67P/Churyumova-Gerasimenko. The image is not to scale.
PIA17666:
Rosetta at Comet
Full Resolution:     TIFF (3.257 MB)     JPEG (73.57 kB)
Add Image to Favorite List 2014-01-24 Comet Rosetta
 VLT
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This image shows the most recent observations of the 2-mile-wide (4-kilometer-wide) comet 67P/Churyumov-Gerasimenko, which is the upcoming target of the European Space Agency's Rosetta mission.
PIA17667:
Comet 67P/Churyumov-Gerasimenko on Oct. 5, 2013
Full Resolution:     TIFF (5.875 MB)     JPEG (242 kB)
Add Image to Favorite List 2014-01-28 NEOWISE
 NEOWISE Telescope
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NASA's NEOWISE mission captured images of Comet C/2013 A1 Siding Spring. The infrared pictures reveal a comet that is active and very dusty.
PIA17833:
NEOWISE Spies Comet C/2013 A1 Siding Spring
Full Resolution:     TIFF (610.3 kB)     JPEG (65.2 kB)
Add Image to Favorite List 2014-02-27 Comet NEOWISE
 NEOWISE Telescope
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Comet NEOWISE was first observed by NASA's NEOWISE spacecraft on Valentine's Day, 2014. This heat-sensitive infrared image was made by combining six exposures taken by the NEOWISE mission of the newly discovered comet.
PIA18032:
An Infrared portrait of Comet NEOWISE (C/2014 C3)
Full Resolution:     TIFF (3.955 MB)     JPEG (152.4 kB)
Add Image to Favorite List 2014-03-05 Asteroid 1024x768x3
This graphic depicts the passage of asteroid 2014 DX110 past Earth on March 5, 2014. The asteroid's closest approach was at a distance equivalent to about nine-tenths of the distance between Earth and the moon.
PIA17955:
Asteroid 2014 DX110 Flyby of Earth on March 5, 2014
Full Resolution:     TIFF (2.36 MB)     JPEG (37.49 kB)
Add Image to Favorite List 2014-03-06 Asteroid 1024x768x3
This graphic depicts the passage of asteroid 2014 EC past Earth on March 6, 2014. The asteroid's closest approach is a distance equivalent to about one-sixth of the distance between Earth and the moon. The indicated times are in Universal Time.
PIA17957:
Asteroid 2014 EC Flyby of Earth on March 6, 2014
Full Resolution:     TIFF (2.36 MB)     JPEG (38.4 kB)
Add Image to Favorite List 2014-03-07 Wide-field Infrared Survey Explorer (WISE)
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This chart shows what types of objects WISE can and cannot see at certain distances from our sun. Bodies with larger masses are brighter, and therefore can be seen at greater distances.
PIA17990:
What WISE Can and Cannot See
Full Resolution:     TIFF (135.5 MB)     JPEG (1.276 MB)
Add Image to Favorite List 2014-03-27 Comet Rosetta
 OSIRIS
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This image of comet 67P/Churymov-Gerasimenko was taken on March 21, 2014, by the narrow-angle camera of the Rosetta spacecraft's Optical, Spectroscopic and Infrared Remote Imaging System (OSIRIS).
PIA17795:
Rosetta's Target
Full Resolution:     TIFF (428.9 kB)     JPEG (41.05 kB)
Add Image to Favorite List 2014-03-27 Comet Rosetta
 OSIRIS
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This image of comet 67P/Churymov-Gerasimenko was taken on March 20, 2014, by the wide-angle camera of the Rosetta spacecraft's Optical, Spectroscopic and Infrared Remote Imaging System (OSIRIS).
PIA17796:
Rosetta Images its Target
Full Resolution:     TIFF (12.08 MB)     JPEG (1.312 MB)
Add Image to Favorite List 2014-04-02 Helix Nebula Hubble Space Telescope
 Hubble Space Telescope
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This image of the Helix Nebula from NASA's Hubble Space Telescope shows a fine web of filamentary 'bicycle-spoke' features embedded in the colorful red and blue gas ring, which is one of the nearest planetary nebulae to Earth.
PIA18164:
Iridescent Glory of Nearby Helix Nebula
Full Resolution:     TIFF (768.1 MB)     JPEG (27.72 MB)
Add Image to Favorite List 2014-05-15 Comet Rosetta
 OSIRIS
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This still from a sequence of images shows comet 67P/Churyumov-Gerasimenko moving against the background star field.
PIA18376:
Rosetta's Comet Comes Alive Animation Icon
Full Resolution:     TIFF (1.003 MB)     JPEG (121.1 kB)
Add Image to Favorite List 2014-06-12 Asteroid Goldstone Deep Space Network (DSN)
 Goldstone Solar System Radar
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NASA scientists used Earth-based radar to produce these sharp views -- an image montage and a movie sequence -- of the asteroid designated '2014 HQ124' on June 8, 2014.
PIA18412:
Radar Images of Asteroid 2014 HQ124 Animation Icon
Full Resolution:     TIFF (730.6 kB)     JPEG (93.79 kB)
Add Image to Favorite List 2014-06-19 Comet Rosetta
 OSIRIS
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This image of comet 67P/Churyumov-Gerasimenko was taken by the Onboard Scientific Imaging System (OSIRIS) on the European Space Agency's Rosetta spacecraft on June 4, 2014.
PIA18516:
Rosetta Closing In
Full Resolution:     TIFF (1.054 MB)     JPEG (36.24 kB)
Add Image to Favorite List 2014-07-03 Comet NEOWISE
 NEOWISE Telescope
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NASA's NEOWISE mission captured this series of pictures of comet C/2012 K1 -- also known as comet Pan-STARRS -- as it swept across our skies on May 20, 2014.
PIA18460:
Infrared View of a Comet and Distant Galaxy Animation Icon
Full Resolution:     TIFF (3.817 MB)     JPEG (142.7 kB)
Add Image to Favorite List 2014-07-17 Comet Rosetta
 OSIRIS
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This observation from ESA's Rosetta spacecraft shows that comet 67P/Churyumov-Gerasimenko has a two-part shape. The image on the left is from OSIRIS; the image on the right is enhanced with interpolated data.
PIA18402:
Rosetta Mission's Destination: Comet 67P/Churnyumov-Gerasimenko
Full Resolution:     TIFF (125.8 kB)     JPEG (6.334 kB)
Add Image to Favorite List 2014-07-17 Comet Rosetta
 OSIRIS
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This frame from an animated sequence combined 36 interpolated images of comet 67P/Churyumov-Gerasimenko, each separated by 20 minutes. This comet is the destination for the European Space Agency's Rosetta mission in 2014.
PIA18403:
Rotation and Shape of Rosetta Mission's Target Comet Animation Icon
Full Resolution:     TIFF (230.8 kB)     JPEG (8.872 kB)
Add Image to Favorite List 2014-07-23 NEOWISE
 NEOWISE Telescope
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Comet C/2013 UQ4 (Catalina) first looked like an asteroid when NASA's NEOWISE team first observed it on December 31, 2013. These exposures were taken that day, when the comet was at a distance of about 2.9 AU from the sun.
PIA18652:
NEOWISE Spots Comet Catalina
Full Resolution:     TIFF (1.278 MB)     JPEG (113.2 kB)
Add Image to Favorite List 2014-07-23 NEOWISE
 NEOWISE Telescope
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NASA's NEOWISE spotted Comet C/2013 UQ4 (Catalina), appearing to be a highly active comet one day past perihelion on July 7, 2014.
PIA18653:
NEOWISE Spies Activity on Comet Catalina
Full Resolution:     TIFF (5.173 MB)     JPEG (315 kB)
Add Image to Favorite List 2014-07-24 Comet Rosetta
 OSIRIS
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Comet 67P/Churyumov-Gerasimenko was imaged by ESA's Rosetta spacecraft on July 20, 2014, from a distance of approximately 3,400 miles (5,500 kilometers). These three images were taken two hours apart.
PIA18418:
Rosetta Approach Tripych: Comet 67P
Full Resolution:     TIFF (592.7 kB)     JPEG (37.33 kB)
Add Image to Favorite List 2014-07-24 Comet Rosetta
 OSIRIS
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Images of comet 67P/Churyumov-Gerasimenko taken on July 14, 2014, by the OSIRIS imaging system aboard ESA's Rosetta spacecraft have allowed scientists to create this three-dimensional shape model of the nucleus.
PIA18419:
Rotating Shape Model of Rosetta's Comet Target Animation Icon
Full Resolution:     TIFF (1.001 MB)     JPEG (21.47 kB)
Add Image to Favorite List 2014-07-31 Comet Rosetta
 OSIRIS
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This image of the coma of comet 67P/Churyumov-Gerasimenko, seen with ESA'S OSIRIS onboard the Rosetta spacecraft, shows the hazy circular structure to the right and center of the coma is an artifact due to overexposure of the nucleus.
PIA18422:
Rosetta's Comet: Imaging the Coma
Full Resolution:     TIFF (187.4 kB)     JPEG (19.46 kB)
Add Image to Favorite List 2014-07-31 Comet Rosetta
 OSIRIS
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This view from the OSIRIS instrument onboard ESA's Rosetta spacecraft shows the nucleus of comet 67P/Churyumov-Gerasimernko from a distance of 1,210 miles (1950 kilometers).
PIA18423:
Comet 67P from 1,200 Miles Away
Full Resolution:     TIFF (380.3 kB)     JPEG (19.93 kB)
Add Image to Favorite List 2014-08-06 Comet Rosetta
 OSIRIS
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Comet 67P/Churyumov-Gerasimenko by ESA's Rosetta's OSIRIS narrow-angle camera on August 3, 2014, from a distance of 177 miles (285 kilometers). The image resolution is 17 feet (5.3 meters) per pixel.
PIA18641:
Rosetta's Comet from 177 Miles
Full Resolution:     TIFF (672.6 kB)     JPEG (72.14 kB)
Add Image to Favorite List 2014-08-06 Comet Rosetta
 OSIRIS
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Close up detail focusing on a smooth region on the 'base' of the 'body' section of comet 67P/Churyumov-Gerasimenko. The image was taken by ESA's Rosetta's OSIRIS on August 6, 2014.
PIA18642:
Rosetta's Target Up Close
Full Resolution:     TIFF (672.6 kB)     JPEG (89.61 kB)
Add Image to Favorite List 2014-08-07 NEOWISE
 NEOWISE Telescope
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NASA's NEOWISE mission detected comet C/2013 A1 Siding Spring on July 28, 2014, less than three months before this comet's close flyby of Mars on Oct. 19.
PIA18593:
NEOWISE Spies Comet C/2013 A1 Siding Spring a Second Time
Full Resolution:     TIFF (19.04 MB)     JPEG (483.9 kB)
Add Image to Favorite List 2014-08-14 Comet Rosetta
 OSIRIS
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This image from ESA's Rosetta spacecraft is of 67P/Churyumov-Gerasimenko shows the diversity of surface structures on the comet's nucleus.
PIA18596:
Comet Surface Variations
Full Resolution:     TIFF (4.199 MB)     JPEG (534.5 kB)
Add Image to Favorite List 2014-08-25 Comet Rosetta
 OSIRIS
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This annotated image depicts two of the five potential landing sites for ESA's Rosetta mission's Philae lander.
PIA18777:
Two Small-Lobe Landing Sites for Rosetta
Full Resolution:     TIFF (3.765 MB)     JPEG (265.2 kB)
Add Image to Favorite List 2014-08-25 Comet Rosetta
 OSIRIS
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This annotated image depicts four of the five potential landing sites for ESA's Rosetta mission's Philae lander.
PIA18778:
Four Rosetta Candidate Landing Sites
Full Resolution:     TIFF (3.709 MB)     JPEG (321.8 kB)
Add Image to Favorite List 2014-08-25 Comet Rosetta
 OSIRIS
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This annotated image depicts the two potential landing sites for ESA's Rosetta's Philae lander that are on the comet's larger lobe.
PIA18779:
Two Large-Lobe Landing Sites for Rosetta
Full Resolution:     TIFF (3.608 MB)     JPEG (338.7 kB)
Add Image to Favorite List 2014-09-11 Comet Rosetta
 OSIRIS
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This view of the 'belly' and part of the 'head' of comet 67P/Churyumov-Gerasimenko indicates several morphologically different regions as seen by ESA's Rosetta spacecraft.
PIA18429:
Distinct Terrains on Rosetta's Comet
Full Resolution:     TIFF (12.59 MB)     JPEG (367.4 kB)
Add Image to Favorite List 2014-09-15 Comet Rosetta
 OSIRIS
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This image depicts the primary landing site on comet 67P/Churyumov-Gerasimenko chosen for the European Space Agency's Rosetta mission.
PIA18809:
Rosetta Lander's Primary Landing Site
Full Resolution:     TIFF (6.585 MB)     JPEG (497.1 kB)
Add Image to Favorite List 2014-09-15 Comet Rosetta
 OSIRIS
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This annotated image depicts the backup landing site (Site C) chosen for ESA's Rosetta spacecraft's Philae lander.
PIA18810:
Rosetta Lander's Backup Landing Site
Full Resolution:     TIFF (3.119 MB)     JPEG (292.6 kB)
Add Image to Favorite List 2014-10-02 Comet Rosetta
 Rosetta NAVCAM
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Four images taken by the ESA Rosetta spacecraft create a montage showing jets of dust and gas escaping from the nucleus of comet 67P/Churyumov-Gerasimenko.
PIA18823:
Rosetta Comet Fires Its Jets
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Add Image to Favorite List 2014-10-09 Mars 2560x1600x3
This artist's concept shows NASA's Mars orbiters lining up behind the Red Planet for their 'duck and cover' maneuver to shield them from comet dust that may result from the close flyby of comet Siding Spring (C/2013 A1) on Oct. 19, 2014.
PIA18611:
Mars Orbiters 'Duck and Cover' for Comet Siding Spring Flyby (Artist's Concept)
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Add Image to Favorite List 2014-10-09 Mars 1000x1000x3
Comet Siding Spring will have a close approach to Mars on Oct. 19, 2014. This artist's concept shows people in the Southern Hemisphere where to look for Mars in the night sky. Mars and the comet may be visible with binoculars.
PIA18612:
View of Comet Siding Spring from Southern Hemisphere (Artist's Concept)
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Add Image to Favorite List 2014-10-14 Comet Rosetta
 CIVA
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A composite image from a camera on ESA's Rosetta mission's Philae comet lander shows a solar array, with comet 67P/Churyumov-Gerasimenko in the background.
PIA18826:
Rosetta Selflessly Offers Beautiful Comet Selfie
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Add Image to Favorite List 2014-10-15 Comet Rosetta
 OSIRIS
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An annotated mosaic from the Rosetta spacecraft shows 'Site J,' the primary landing site on comet 67P/Churyumov-Gerasimenko for the mission's Philae lander.
PIA18827:
Rosetta's Comet Landing Site Close Up
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Add Image to Favorite List 2014-10-20 Mars Mars Exploration Rover (MER)
 Panoramic Camera
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Researchers used the Pancam on NASA's Mars Exploration Rover Opportunity to capture this view of comet C/2013 A1 Siding Spring as it flew near Mars on Oct. 19, 2014.
PIA18591:
Mars Rover Opportunity's View of Passing Comet
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Add Image to Favorite List 2014-10-20 Mars Mars Exploration Rover (MER)
 Panoramic Camera
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Researchers used the Pancam on NASA's Mars Exploration Rover Opportunity to capture this view of comet C/2013 A1 Siding Spring as it flew near Mars on Oct. 19, 2014.
PIA18592:
Mars Rover Opportunity's View of Passing Comet (Short Exposure)
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Add Image to Favorite List 2014-10-20 Mars Mars Exploration Rover (MER)
 Panoramic Camera
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This two-image blink shows a comparison of two exposure times in images from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Opportunity showing comet C/2013 A1 Siding Spring as it flew near Mars on Oct. 19, 2014.
PIA18617:
Mars Rover Opportunity's View of Comet (Blink of Two Exposures) Animation Icon
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Add Image to Favorite List 2014-10-20 Mars Mars Reconnaissance Orbiter (MRO)
 HiRISE
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These images were taken of comet C/2013 A1 Siding Spring by NASA's Mars Reconnaissance Orbiter on Oct. 19, 2014, during the comet's close flyby of Mars and the spacecraft.
PIA18618:
First Resolved Image of a Long-Period Comet's Nucleus
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Add Image to Favorite List 2014-10-23 Mars MAVEN
 Imaging Ultraviolet Spectrograph
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NASA's MAVEN spacecraft obtained this ultraviolet image of hydrogen surrounding comet Siding Spring on Oct. 17, 2014, two days before the comet's closest approach to Mars.
PIA18619:
MAVEN Ultraviolet Image of Comet Siding Spring's Hydrogen Coma
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Add Image to Favorite List 2014-10-23 Mars Hubble Space Telescope
 WFPC2
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This synthesized composite of NASA Hubble Space Telescope images captures the positions of comet Siding Spring and Mars in a never-before-seen close passage of a comet by the Red Planet.
PIA17802:
Close Encounters: Comet Siding Spring Seen Next to Mars (Synthesized Image)
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Add Image to Favorite List 2014-10-24 Mars Mars Reconnaissance Orbiter (MRO)
 CRISM
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These two infrared images of comet C/2013 A1 Siding Spring were taken by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) aboard NASA's Mars Reconnaissance Orbiter on Oct. 19, 2014.
PIA15291:
Images From Mars-Orbiting Spectrometer Show Comet's Coma
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Add Image to Favorite List 2014-10-24 Comet Rosetta
 OSIRIS
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This image was taken by the Optical, Spectroscopic, and Infrared Remote Imaging System, Rosetta's main onboard scientific imaging system, on Sept. 10, 2014. Jets of cometary activity can be seen along almost the entire body of the comet.
PIA18886:
Rosetta Comet Spreads its Jets
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Add Image to Favorite List 2014-10-24 Comet Rosetta
 OSIRIS
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This image was taken by the Optical, Spectroscopic, and Infrared Remote Imaging System, Rosetta's main onboard scientific imaging system, on Sept. 10, 2014. Jets of cometary activity can be seen along almost the entire body of the comet.
PIA18835:
Rosetta Comet Spreads its Jets
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Add Image to Favorite List 2014-11-06 Mars Mars Science Laboratory (MSL)
 Mastcam
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This image from an animiation of comet C/2013 A1 Siding Spring were taken by the Mast Camera (Mastcam) on NASA's Curiosity Mars rover as the comet passed near the red planet on Oct. 19, 2014.
PIA19043:
Mars Curiosity Rover Views Comet Siding Spring Animation Icon
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Add Image to Favorite List 2014-11-06 Comet Rosetta
 OSIRIS
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This image of comet 67P/Churyumov-Gerasimenko was obtained on October 30, 2014 by the OSIRIS scientific imaging system on the Rosetta spacecraft. The right half is obscured by darkness.
PIA19040:
Dark Side of Comet 67P/Churyumov-Gerasimenko
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Add Image to Favorite List 2014-11-06 Comet Rosetta
 OSIRIS
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This is a rare glance at the dark side of comet 67P/Churyumov-Gerasimenko. Light backscattered from dust particles in the comet's coma reveals a hint of surface structures. This image was taken by OSIRIS, Rosetta's scientific imaging system.
PIA19041:
Rare Glance at Dark Side of Comet 67P/Churyumov-Gerasimenko
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Add Image to Favorite List 2014-11-06 Comet Rosetta
 OSIRIS
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This image of comet 67P/Churyumov-Gerasimenko was obtained on October 30, 2014 by the OSIRIS scientific imaging system on the Rosetta spacecraft. The saturation of the image allows the viewer to see some surface structures on 'dark side' of the comet.
PIA19042:
Dark Side of Comet 67P/Churyumov-Gerasimenko (Saturated)
Full Resolution:     TIFF (4.199 MB)     JPEG (720.1 kB)
Add Image to Favorite List 2014-11-07 Mars MAVEN
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This artist's concept depicts the Imaging Ultraviolet Spectrograph (IUVS) on NASA's MAVEN spacecraft scanning the upper atmosphere of Mars. IUVS uses limb scans to map the chemical makeup and vertical structure across Mars' upper atmosphere.
PIA18856:
Artist's Concept of MAVEN's Imaging Ultraviolet Spectrograph at Work
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Add Image to Favorite List 2014-11-07 Mars MAVEN
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The places where the red line on this graph extends higher than the blue line show detection of metals added to the Martian atmosphere from dust particles released by a passing comet on Oct. 19, 2014. The graphed data are from NASA's MAVEN spacecraft.
PIA18857:
Comet Meteor Shower Put Magnesium and Iron into Martian Atmosphere
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Add Image to Favorite List 2014-11-07 Mars MAVEN
 Neutral Gas and Ion Mass Spectrometer
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These eight graphs present data from the Neutral Gas and Ion Mass Spectrometer on NASA's MAVEN orbiter identifying ions of different metals added to the Martian atmosphere shortly after comet C/2013 A1 Siding Spring sped close to Mars.
PIA18858:
Ions of Eight Metals from Comet Dust Detected in Mars Atmosphere
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Add Image to Favorite List 2014-11-07 Mars Mars Express (MEX)
 Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS)
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These spectrograms from the MARSIS instrument on the European Space Agency's Mars Express orbiter show the intensity of radar echo in Mars' far-northern ionosphere at three times on Oct. 19 and 20, 2014.
PIA18859:
Radar-Detected Change in Martian Near-Polar Ionosphere After Comet's Flyby
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Add Image to Favorite List 2014-11-07 Mars Mars Express (MEX)
 Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS)
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These plots portray data from radar sounding of Mars' mid-latitude ionosphere at three times on Oct. 19 and 20, 2014. The data are from the MARSIS instrument on the European Space Agency's Mars Express orbiter.
PIA18860:
Change in Mars' Mid-Latitude Ionosphere After Comet Flyby
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Add Image to Favorite List 2014-11-07 Mars Mars Reconnaissance Orbiter (MRO)
 Shallow Subsurface Radar (SHARAD)
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A comparison of two radargrams from the SHARAD instrument on NASA's Mars Reconnaissance Orbiter shows effects on the Martian ionosphere from the close passage of a comet.
PIA18861:
Radar Indication of Effect of Comet Flyby on Martian Ionosphere
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Add Image to Favorite List 2014-11-07 Mars Mars Reconnaissance Orbiter (MRO)
 HiRISE
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This graph shows changes in apparent brightness of comet C/2013 A1 Siding Spring as it approached and receded from Mars, as seen by the HiRISE camera on NASA's Mars Reconnaissance Orbiter. The pattern suggests the comet rotates once every eight hours.
PIA18862:
Brightness Rhythm of Mars Flyby Comet Is Clue to Rotation Rate
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Add Image to Favorite List 2014-11-07 Mars Mars Reconnaissance Orbiter (MRO)
 HiRISE
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Five images of comet Siding Spring taken within a 35-minute period as it passed near Mars on Oct. 19, 2014, provide information about the size of the comet's nucleus. The images were acquired by the HiRISE camera on NASA's Mars Reconnaissance Orbiter.
PIA18863:
Mars Orbiter Sizes Up Passing Comet
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Add Image to Favorite List 2014-11-07 Mars MAVEN
 Imaging Ultraviolet Spectrograph (IUVS)
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This graphic depicts what Mars' atmosphere would have looked like to a viewer with ultraviolet-seeing eyes after a meteor shower on Oct. 19, 2014.
PIA18864:
Emission from Ionized Magnesium in Mars' Atmosphere After Comet Flyby
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Add Image to Favorite List 2014-11-07 Mars Mars Reconnaissance Orbiter (MRO)
 CRISM
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The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) aboard NASA's Mars Reconnaissance Orbiter obtained this spectrum for comet C/2013 A1 Siding Spring during the comet's close approach to Mars.
PIA18865:
Mars-Orbiting Spectrometer Shows Dusty Comet's Spectrum
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Add Image to Favorite List 2014-11-07 Mars Mars Reconnaissance Orbiter (MRO)
 HiRISE
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This frame from a movie sequence of images from NASA's Mars Reconnaissance Orbiter (MRO) shows comet C/2013 A1 Siding Spring before and after its close pass by Mars in October 2014. False color enhances subtle variations in brightness in the comet's coma.
PIA19044:
Mars-Flyby Comet in False Color Animation Icon
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Add Image to Favorite List 2014-11-07 Mars Mars Reconnaissance Orbiter (MRO)
 HiRISE
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This frame from an animated artist's rendering begins with NASA's Mars Reconnaissance Orbiter spacecraft above Mars. The movie then transitions to a sequence of HiRISE images of the comet taken as it flew past Mars.
PIA19045:
Mars Orbiter Observes Comet Siding Spring (Animation) Animation Icon
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Add Image to Favorite List 2014-11-07 Comet Rosetta
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This artist's concept of the Rosetta mission's Philae lander on the surface of comet 67P/Churyumov-Gerasimenko, is from an animation showing the upcoming deployment of Philae and its subsequent science operations on the surface of the comet.
PIA18891:
Philae's Descent and Science of the Surface
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Add Image to Favorite List 2014-11-10 Spitzer Space Telescope
 Spitzer Space Telescope
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This diagram illustrates two similar star systems, HD 95086 and HR 8799. Evidence from NASA's Spitzer Space Telescope has pointed to the presence of two dust belts in each system.
PIA18900:
Sibling Star Systems? Dust Structures Suggest So
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Add Image to Favorite List 2014-11-11 Comet Rosetta
 CIVA
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The Philae lander of the European Space Agency's Rosetta mission took this self-portrait of the spacecraft on Sept. 7, 2014, at a distance of about 30 miles (50 kilometers) from comet 67P/Churyumov-Gerasimenko.
PIA18872:
Rosetta Mission Selfie at 30 Miles
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Add Image to Favorite List 2014-11-11 Comet Rosetta
 Rosetta NAVCAM
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A jagged horizon of the nucleus of comet 67P/Churyumov-Gerasimenko appears in this image taken by the navigation camera on the ESA's Rosetta spacecraft during the second half of October 2014.
PIA18867:
Jagged Horizon on Rosetta's Destination Comet
Full Resolution:     TIFF (1.05 MB)     JPEG (135.2 kB)
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